Question

- e) 4x. ( 2x+5)=
f) (2x +3). (4x + 1)=
g) (8y - 2). ( 2y2 - 3y + 3) =​

Answer 1

Resposta:

e) 4x . 2x + 4x . 5 = 8x² + 20x

f) 2x. 4x + 2x . 1 + 3 . 4x + 3 . 1 = 8x² + 2x + 12x + 3 = 8x² + 14x + 3

g) 8y . 2y² + 8y . (-3y) + 8y . 3 + (-2) . 2y² + (-2) . (-3y) + (-2) . 3

8y³ + (-24y²) + 24y + (-4y²) + 6y + (-6)

8y³ - 28y² + 30y - 6